/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.hierarchyviewerlib.models;
import com.android.ddmlib.IDevice;
import com.android.hierarchyviewerlib.device.Window;
import java.util.ArrayList;
import java.util.HashMap;
/**
* This class stores the list of windows for each connected device. It notifies
* listeners of any changes as well as knows which window is currently selected
* in the device selector.
*/
public class DeviceSelectionModel {
private final HashMap<IDevice, Window[]> mDeviceMap = new HashMap<IDevice, Window[]>();
private final HashMap<IDevice, Integer> mFocusedWindowHashes = new HashMap<IDevice, Integer>();
private final ArrayList<IDevice> mDeviceList = new ArrayList<IDevice>();
private final ArrayList<IWindowChangeListener> mWindowChangeListeners =
new ArrayList<IWindowChangeListener>();
private IDevice mSelectedDevice;
private Window mSelectedWindow;
private static DeviceSelectionModel sModel;
public static DeviceSelectionModel getModel() {
if (sModel == null) {
sModel = new DeviceSelectionModel();
}
return sModel;
}
public boolean containsDevice(IDevice device) {
synchronized (mDeviceMap) {
return mDeviceMap.containsKey(device);
}
}
public void addDevice(IDevice device, Window[] windows) {
synchronized (mDeviceMap) {
mDeviceMap.put(device, windows);
mDeviceList.add(device);
}
notifyDeviceConnected(device);
}
public void removeDevice(IDevice device) {
boolean selectionChanged = false;
synchronized (mDeviceMap) {
mDeviceList.remove(device);
if (!mDeviceList.contains(device)) {
mDeviceMap.remove(device);
mFocusedWindowHashes.remove(device);
if (mSelectedDevice == device) {
mSelectedDevice = null;
mSelectedWindow = null;
selectionChanged = true;
}
}
}
notifyDeviceDisconnected(device);
if (selectionChanged) {
notifySelectionChanged(mSelectedDevice, mSelectedWindow);
}
}
public void updateDevice(IDevice device, Window[] windows) {
boolean selectionChanged = false;
synchronized (mDeviceMap) {
mDeviceMap.put(device, windows);
// If the selected window no longer exists, we clear the selection.
if (mSelectedDevice == device && mSelectedWindow != null) {
boolean windowStillExists = false;
for (int i = 0; i < windows.length && !windowStillExists; i++) {
if (windows[i].equals(mSelectedWindow)) {
windowStillExists = true;
}
}
if (!windowStillExists) {
mSelectedDevice = null;
mSelectedWindow = null;
selectionChanged = true;
}
}
}
notifyDeviceChanged(device);
if (selectionChanged) {
notifySelectionChanged(mSelectedDevice, mSelectedWindow);
}
}
/*
* Change which window has focus and notify the listeners.
*/
public void updateFocusedWindow(IDevice device, int focusedWindow) {
Integer oldValue = null;
synchronized (mDeviceMap) {
oldValue = mFocusedWindowHashes.put(device, new Integer(focusedWindow));
}
// Only notify if the values are different. It would be cool if Java
// containers accepted basic types like int.
if (oldValue == null || (oldValue != null && oldValue.intValue() != focusedWindow)) {
notifyFocusChanged(device);
}
}
public static interface IWindowChangeListener {
public void deviceConnected(IDevice device);
public void deviceChanged(IDevice device);
public void deviceDisconnected(IDevice device);
public void focusChanged(IDevice device);
public void selectionChanged(IDevice device, Window window);
}
private IWindowChangeListener[] getWindowChangeListenerList() {
IWindowChangeListener[] listeners = null;
synchronized (mWindowChangeListeners) {
if (mWindowChangeListeners.size() == 0) {
return null;
}
listeners =
mWindowChangeListeners.toArray(new IWindowChangeListener[mWindowChangeListeners
.size()]);
}
return listeners;
}
private void notifyDeviceConnected(IDevice device) {
IWindowChangeListener[] listeners = getWindowChangeListenerList();
if (listeners != null) {
for (int i = 0; i < listeners.length; i++) {
listeners[i].deviceConnected(device);
}
}
}
private void notifyDeviceChanged(IDevice device) {
IWindowChangeListener[] listeners = getWindowChangeListenerList();
if (listeners != null) {
for (int i = 0; i < listeners.length; i++) {
listeners[i].deviceChanged(device);
}
}
}
private void notifyDeviceDisconnected(IDevice device) {
IWindowChangeListener[] listeners = getWindowChangeListenerList();
if (listeners != null) {
for (int i = 0; i < listeners.length; i++) {
listeners[i].deviceDisconnected(device);
}
}
}
private void notifyFocusChanged(IDevice device) {
IWindowChangeListener[] listeners = getWindowChangeListenerList();
if (listeners != null) {
for (int i = 0; i < listeners.length; i++) {
listeners[i].focusChanged(device);
}
}
}
private void notifySelectionChanged(IDevice device, Window window) {
IWindowChangeListener[] listeners = getWindowChangeListenerList();
if (listeners != null) {
for (int i = 0; i < listeners.length; i++) {
listeners[i].selectionChanged(device, window);
}
}
}
public void addWindowChangeListener(IWindowChangeListener listener) {
synchronized (mWindowChangeListeners) {
mWindowChangeListeners.add(listener);
}
}
public void removeWindowChangeListener(IWindowChangeListener listener) {
synchronized (mWindowChangeListeners) {
mWindowChangeListeners.remove(listener);
}
}
public IDevice[] getDevices() {
synchronized (mDeviceMap) {
return mDeviceList.toArray(new IDevice[mDeviceList.size()]);
}
}
public Window[] getWindows(IDevice device) {
Window[] windows;
synchronized (mDeviceMap) {
windows = mDeviceMap.get(device);
}
return windows;
}
// Returns the window that currently has focus or -1. Note that this means
// that a window with hashcode -1 gets highlighted. If you remember, this is
// the infamous <Focused Window>
public int getFocusedWindow(IDevice device) {
synchronized (mDeviceMap) {
Integer focusedWindow = mFocusedWindowHashes.get(device);
if (focusedWindow == null) {
return -1;
}
return focusedWindow.intValue();
}
}
public void setSelection(IDevice device, Window window) {
synchronized (mDeviceMap) {
mSelectedDevice = device;
mSelectedWindow = window;
}
notifySelectionChanged(device, window);
}
public IDevice getSelectedDevice() {
synchronized (mDeviceMap) {
return mSelectedDevice;
}
}
public Window getSelectedWindow() {
synchronized (mDeviceMap) {
return mSelectedWindow;
}
}
}
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